My favorite Amazon scam is the Amazon Ship of Theseus[0]. You sell a product, normally a cheap electronic, and build up a decent corpus of positive reviews. A good example is a USB-C cable or something. Then you decide you want to sell a new product in a more competitive subcategory, like Bluetooth Headphones. You then take the _existing_ listing and change it piece by piece. First the pictures, then the title, then…
The silver lining, for me, is that I was so fucking annoyed with ASUS support that I angrily shipped it back to Amazon, bought Ubiquiti equipment, and experienced such quality whiplash that I bought a bunch of UBNT (now UI) stock. +160% since I bought.